Merge pull request #1481 from bedroge/networkx_2025b

{2025.06}[2025b] networkx 3.5

Author: ocaisa

easystacks/software.eessi.io/2025.06/eessi-2025.06-eb-5.3.0-2025b.yml

@@ -1,4 +1,5 @@
 easyconfigs:
   - Dyninst-13.0.0-GCC-14.3.0.eb
   - googletest-1.17.0-GCCcore-14.3.0.eb
+  - networkx-3.5-gfbf-2025b.eb
   - SciPy-bundle-2025.07-gfbf-2025b.eb